It is completely normal!
During the first trimester of your pregnancy you may experience some vaginal bleeding to spotting. This can last through the first three months. It could just be some light spotting or it could even be a bit heavier almost like you are on your period. This is a very common problem in the early part of the pregnancy and it can cause some unwanted complications.
Bleeding during the first trimester is rather normal, but when it comes to bleeding in the second and third trimester there might be something wrong. If you find that you are bleeding in your second or third trimester you need to go see your doctor immediately so your doctor can do an examination and an ultrasound and figure out exactly what the problem is.
Bleeding if not caught and cared for right away could end up leading into a miscarriage where the baby is actually lost. This can be devastating to the mother. Implantation bleeding is typical spotting and is not usually a cause for concern. If the bleeding gets any heavier than this, is when you need to call your doctor.
If you are bleeding call your doctor and let them know, be sure to tell them how much blood there is and how often, this way your doctor can make an assessment and go from there. If you are bleeding you may find that you are even more tired than you were, or you may start to experience some dizziness or go through some fainting spells. This could indicate that you have been losing more blood than you should be at a much faster rate, and you need to be treated as soon as possible.
When it comes to bleeding in the last stages of your pregnancy, there may be some specific symptoms that you need to watch out for. Fetal bleeding is when you are experiencing vaginal bleeding, but it is actually the baby losing blood while inside of you. Placental abruption is when you are experiencing dark blood or even clots; this tends to occur before you go into labor. See your doctor right away if this occurs.
The bottom line is while some light bleeding is normal during the first stages of your pregnancy, any bleeding after that is not normal and could lead to worse things. Just keep an eye out for stuff like this and bring it up to your doctor when it occurs.