low lying placenta

i am 19weeks 4days now. can feel flickering feeling, gyn says baby is kicking and can alrd start feeling it. everything is normal and baby is healthy but i have a low placenta. had to be bedrest. no long distance and heavy lifting. researched about it. but still feel so scared. for past low placenta mummys, did ur placenta move up and no csect? im just worried abt csect, heard that its painful.