Hello, Welcome to HCM. All this symptoms of sore throat,mouth ulcer could be because of upper respiratory infection (pharyngitis, laryngitis, epiglotitis) which needs medical attention. It is mostly due to viral infection like EB virus,adenovirus but some time could be bacterial or parasitic. Your girl friend may check some routine blood investigation and ESR to rule out chances of bacterial infection. She may require higher antibiotics (quinolones or macrolides) to prevent super infectionwith anti-inflammatory and other supportive treatment. For mouth ulcer,she can apply anesthetic gel like zytee gel or dento gel with vitamin B complex and folic acid for symptomatic relief and for faster healing of ulcer.For cold she can take antihistamines like cetrizine with pain killer if there is associated pain. For migraine, Give her OTC analgesic which suits her and take bed rest or sleep with muscle relaxant and antacid if gas trouble.Try to avoid contact with triggering factor (here sunlight exposure). If it is not relieved in-spite of taking treatment then she can see neurologist and undergo clinical examination, routine blood investigations,electroencephalogram or CT brain but only after neurologist advise. For query regarding pregnancy,she may do urine pregnancy test at home but it would be advisable to do that after 15 days of having unprotected sex which might give some accurate findings. However,the chances of pregnancy is less as you said she had a abortion 1 month ago. So,It is best to see your family physician or ENT surgeon if throat symptoms persist for complete treatment. Regards,