I'm having a really hard time

hi everyone. I’m having a really hard time. Im 22 weeks pregnant. I’m having all these strange symptoms. numbness weakness all over. in really scared it’s a stroke or something bad. I feel dizzy and lightheaded at times and its really scary. My b12 blood results came back normal. I had a full blood count done the other day. would that show anything bad. ? as in strokes or anything like that. My sister just came out if isolation for having covid and my parents were around her they tested negative but I’m scared she could still pass it on. they are still around her and called to my house the other day and took my son for a drive without me knowing. his dad let them take him I dont know why when he knows I’m terrified. Now I’m terrified we have been exposed. but the health officials said she was safe as she is back to work working with old people. I’m scared of everything. please help me and tell me of there is anything I can do to help me feel better. I can’t keep living like this when I’ve a little baby inside. I know in having another little boy. I just want me and my babys to be ok