Am I carrying twins? Help!

Has anyone on here had twins?im almost certain I’m carrying twins,I’m 38 will be 39 by time baby is born,this will be my fifth baby and 7th pregnancy,iam just so drained out from getting up to going to bed,I’m a care worker aswel so from the minute I walk into work to leaving I’m constantly on the go(could just be this draining me)but my god I’m tired out all the time,my partner was great at first but even now he’s getting pissed off that I can’t do anything apart from sleep,I told midwife at my booking in appointment and she said I could be anemic but I’m already showing,I know it could be bloating and the fact iv already had kids but I feel totally different this time around,I can smell smells from about a mile away I think iv also caught some kind of super human powers lol,I just want this phase to hurry and pass,I’m not sick very often but feel sick most of the time,Il stand up to do tea and halfway through doing it Il go all tingly like I’m going to pass out so I have to sit down,I’m a right moaner right now and doing my own head in haha