Just need to vent

I’m practically a single mom at the moment since my husband is in AIT in another state for the next 8 weeks. He was just at BCT and during those 10 weeks I literally got sick every 2 weeks. It sucked. Our son is 9 months old now and yet I am sick again. This time I am very weak, I can’t stand for more than 2 minutes in fear that I will faint, I have bad diarrhea, and nausea, and stomach cramping. I am assuming it’s a bug. Well I moved in with my MIL because she talked me into it since I wouldn’t have my husband to help but she makes things worse on me. She hasn’t offered to help me with my son and I’ve been feeling very fatigued. I don’t trust myself walking downstairs with him to get him a bottle because I am that weak. She knows I’m sick as I’ve ran to the bathroom every 15 mins since I’ve been awake. She doesn’t even offer to help. She specifically told me to move in so she could help me but she is always “busy”. Am I expecting too much? I mean since moving here my son has loved to be held more, babied more and needs constant attention. He was so low needs when we had our own place. He could play by himself for 20 mins if I needed a shower, now I have to take him in the shower with me. I am exhausted being alone in this. I feel for single moms. Being a mom is difficult enough then add being alone and sick to the mix it’s enough to make me want to give up.