Hi, I am an American Board Certified Neurologist with experience in treating all neurological and other medical conditions including the diagnosis & management of the blood spotting after recent sexual intercourse you have mentioned here, and I am very glad to help you with your health questions.
Yes pregnancy is a possibility that needs to considered in these circumstances
Blood spotting can occur during the fertilization of the ovum and as the ovum gets implanted in the uterus and this phenomenon is experienced by many women
This is a normal phenomenon
However we need to explore other possibilities too
Sometimes the friction during the sex too can cause some mild bleeding or spotting
There may be many other causes for such bleeding/spotting
A pregnancy test can help in exploring the possibility of pregnancy
You may try to see your Drs so that you can receive a thorough clinical examination to check for other possibilities too
Once again to your main question, yes, pregnancy can certainly cause the type mild bleeding/spotting you are having, but there could be other possibilities too so please try to see your clinic Drs asap
Please let me know if you have any further questions, and if you feel you have received the answer to your question please rate me so that I can receive credit for the time and effort put by me in answering your question.