Hey mama, those sharp pains on the side can be normal, a lot of us felt that din around that time, usually from ligament stretching as baby grows, pero ang best talaga is to mention it to your OB sa next check-up para sure lang, especially kung may patterns or if it gets worse. The tummy aches na mawawala agad usually okay, pero since it's your first time, better peace of mind na if you ask your doctor about both!