It is generally completely safe unless your doctor has specifically asked you to avoid it due to some complications. I was also very scared in my second month, but my gynac cleared all my doubts. Just ask your doc once during your checkup for peace of mind.
Medically, the baby is well protected in the amniotic sac, so normal intercourse doesn't harm them. However, if you have a history of miscarriages, spotting, or cramps, it's best to avoid it and ask your gynac first.
You can definitely have it, but listen to your body first. If you feel tired or have any mild cramping, take rest and drink warm water. If you notice even a little bit of spotting, stop immediately and visit your doctor.
Unless you have spotting or a high-risk pregnancy, it is completely normal to have sex. Just go slow and make sure you are comfortable. If you feel any pain or cramping afterwards, then stop and call your doc.
