Do you guys think I am over reacting? I feel like my group members in uni are excluding me and I am debating switching groups

Trying to make this short so skipping details. In a group with 5 people including myself. They were already a group of 4 teacher added me to there group because I didn't have one. I have one girls whatsapp number, I asked her if she could make a group chat with the other girls and she said " I will ask them". They all have a group chat on imessage, they know i don't have an iPhone. I was in email contact with one of the girls, when I first got added to this group. She said oh we already have a group chat what is your number. I said I am sorry I dont have an iPhone can we use WhatsApp and gave her my number she never responded. The project is due next week and is worth 20% of our grade. The fact its taking this long to add me to a group chat is honestly annoying me and I am debating if I should just email another group and ask to join. I have a million assignments due this week cause reading week is the next week and I feel like my gut is telling me I need to just switch groups. Group work in uni sucks honestly especially if you dont have close friends and ppl are acting like this is high-school with the friendship groups