Congrats on your pregnancy! Ask your doctor if it is ok. Everyone pregnancy is different. I wasn't suppose to have sex after week 17, due to some funneling of my cervix.
First off many congratulations on conceiving. Sex during pregnancy is very safe unless otherwise told not to do so my your medical professional. Baby is tucked away behind the cervix so there is no chance of being damaged during intimacy. You are likely to be classed as a high risk pregnancy because of your age, but you should establish what those risks are before you start letting this pregnancy take over your life. When it comes to being intimate, take things slowly and don't be too rough. Now that you are pregnant you might find that you are now more sensitive so orgasms may be even easier to reach. Sometimes after sex you might find that you have very slight bleeding due to the extra blood flow to your vaginas, more often than not this is nothing to worry about; chances are that friction or a slight tear has caused this
Even with some high risk pregnancy sex is not a forbidden thing. Later the trimester more you can do is the advice from my MW. Better to ask your doctor or midwife. Only in a very case where your placenta is low lying and you are not allowed to walk is sex forbidden. So dont worry <3
A lot of Dr's say that sex during pregnancy is OK but I would just verify with your Dr